Bought a total of 10 AK2i and tested on the DSi XL. 2 Bought from Shoptemp 5 Bought from Priceangels 3 Bought from Goldenbridge All cards are equal, arrived at the same date, have same hardware ID. 7 Cards worked just fine after updating to 1.4 1 card needed paper trick 2 cards was troublesome (both from shoptemp) 1 of the cards finally worked after xx number of tries, the last one will not work on the XL, but works just fine on a DSL. (updating went fine but will not be recognised by the xl) I hope this is not the real statistics for the Ak2i on the XL, 3 of the 10 cards had problems, funny thing all of them works on the DSL, so it have to be something with the cartridge design making it troublesome to get correct contact. I also tested 10 R4RTS (m3 team), 20 R4i from r4i-sdhc.com and 10 real DSTTi cards, none of these had any problems. The XL have also been tested with cards from M3 (Zero), Supercard, Edgei and EZ and none of these had any problems.